Severe winds attaining velocities of approximately 155km/h (96mph) have left around 90,000 properties without power and compelled agencies to call off in excess of 100 air travel services, as reported by domestic outlets.
The winds are affecting the entire southern region and lower areas of the northern region, as stated by the national weather agency.
The nation's agencies have announced rare high-level wind alerts - the most severe warning - in central regions such as these major districts.
People have been advised to remain inside, refrain from journeys, and make arrangements for more power and communication outages.
Widespread Impact and Crisis Measures
The electricity loss appears to be affecting homes mostly in the South Island, though agencies state that the electricity supply was being restored progressively.
Local media have reported that in certain areas homes have lost their roofs, whereas trees and electricity poles have been brought down by the winds.
Within the capital, a person was fatally injured after being impacted by a falling limb at a frequent walking route on earlier this week.
Additionally in the city, a woman was blown onto approaching vehicles on a thoroughfare by a strong gust of wind, in a incident that was captured in a popular vehicle recording.
Flights to and from the city have been cancelled because of the weather, while some roads and libraries are not operating.
Simultaneously authorities in Canterbury have issued a state of emergency, to support emergency management operations.
Strike Action During Harsh Conditions
These intense gusts on Thursday come as many of teachers, doctors and other public workers take part in what has been described as a "mega strike", calling for improved salaries and workplace environments.
But the severe conditions has compelled them to modify certain arrangements, with various open-air gatherings relocated inside or cancelled.
Similar gusts are affecting Australia, causing a period of extreme heat to the country's outback.
Agencies have declared burning restrictions for concern about forest fires.